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<正>危险品运输车的罐体副车架总成(下简称:副车架),由车架纵梁、横梁以及罐体斜撑等部件组成,主要起支撑罐体以及罐体与车架连接的作用。副车架各组成零部件应保证罐体所需的设计强度和刚度,且需对所设计的副车架强度进行校核。本文所设计的副车架材料,纵梁采用Q345B/T6,横梁采用Q345B/T4;设计完成后,对罐体副车架的强度以及与底盘车架的连接支座做局部强度校核计算分析。下面是设计、校核过程。 相似文献
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散装水泥车罐体结构的改进 总被引:4,自引:0,他引:4
大容积散装水泥罐车大多采用半挂形式,其罐体纵横面多V型,容易发生弯曲变形。改为V型罐体的结构经计算验证表明,不仅增加了罐体的容积,还可提高罐体的刚度。 相似文献
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气卸式散装水泥罐车罐体在作业中承受气压载重等载荷,经较长时间使用后,易出现罐体变形损坏等故障。在总结以往的罐体故障情况后,根据卸料过程的实际物理状态,提出了罐体受力分析的新方法。 相似文献
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改大型等径罐体为锥形罐体结构,可降低液化气体运输半挂车的质心高度,提高行驶安全,对锥形罐体的放样提出了新的思路。 相似文献
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针对一种聚乙烯衬里罐体的实时检测方法进行了探讨,该方法检测时无需放空物料和清洗设备,可以对使用中的聚乙烯衬里罐体进行实时监测。将罐体功能检测仪的检测探头插入到介质液面中,另一端接检测仪主机,报警器可告知使用者衬里层是否即将破损或已经破损。该检测仪在设备上安装十分便携,其主要意义在于衬里层破损前就能发现隐患,而不需要等到腐蚀掉金属罐体或罐体泄漏才被发现。 相似文献
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该文利用计算流体动力学模型,对合流溢流污水高效沉淀池进行了模拟。模拟结果表明,由于表面负荷较大,进水水流以较快速度从进水挡板下部通过,冲击池底部污泥层,同时穿过池底部撞向池下游池壁,再在斜板下方产生回流,从而影响沉淀池的沉淀效果。因此在设计高表面负荷沉淀池时进水的布水均匀尤其重要。在给定出水SS设计标准下(60 mg/L),进水SS为500 mg/L,经CFD模型优化后的沉淀池,能将表面负荷维持在20 m3/m2.h左右范围正常运行。 相似文献
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油库储油罐所处的软土地基在外界因素干扰下易出现不均匀沉降问题,导致油库储油罐罐体变形、位移等问题,为此提出基于有限元分析的油库储油罐软土地基不均匀下沉数值模拟。根据油库储油罐软土孔隙水、土粒、天然土体等的孔隙率,分析油库储油罐软土地基固结沉降的影响因素,获取油库储油罐软土地基沉降的平均固结度;根据有限元分析方法以及虎克定律,分析油库储油罐软土地基的非线性特征,确定油库储油罐软土地基在不同状况下应力的确定;采用ANSYS软件构建油库储油罐软土地基模型,分析油库储油罐软土地基不均匀下沉情况。仿真模拟表明,当施加荷载时,油库储油罐底板中心以及整体沉降逐步提升;初始加载时,地基土外力作用造成超孔隙水压力高于地基附加应力,储油罐一次加载的外力作用大于分级加载,分级加载可降低软土地基不均匀下沉情况。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(10):1640-1654
This paper deals with the study of running dynamic effects for a partially filled railway tank vehicle. A computational fluid dynamics model in 2D is established and used to define the motion of the sloshing fluid and the forces generated on the tank, for curving conditions typical of railway freight transport. From these results, an equivalent mechanical model is identified which is able to correctly reproduce the forces generated on the tank. Finally, a mathematical model is defined for the entire freight car, including the bogies with primary suspensions, the tank and a discrete number of equivalent models positioned at different places along the longitudinal axis of the tank. This model is used to simulate the dynamics of the tank for a variety of curve geometries, train speeds and fill levels. By these simulations, derailment and rollover risks are evaluated and the most critical conditions for running safety are defined. Results show that sloshing can increase significantly the risk of tank rollover whereas its influence on the risk of derailment is minor. 相似文献
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R. Ranganathan Graduate Student S. Rakheja Research Associate Professor S. Sankar Professor Director 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》1990,19(4):177-200
The influence of the lateral load shift on the dynamic response characteristics of an articulated tank vehicle is investigated assuming inviscid fluid flow conditions. A quasi-dynamic roll plane model of a partially filled cleanbore tank of circular cross-section is developed and integrated to a three-dimensional model of the articulated vehicle, assuming constant forward speed. The destabilizing effects of liquid load shift are studied by comparing the directional dynamics of the partially filled tank vehicle to that of an equivalent rigid cargo vehicle subject to steady steer input. Dynamic response characteristics demonstrate that the stability of a partially filled tank vehicle is adversely affected by the Liquid load shift The distribution of cornering forces caused by the liquid load shift yield considerable deviation of the path followed by the liquid tank vehicle. The influence of the vehicle speed on the dynamics of the liquid tank vehicle is also investigated for variations in the fill levels and fluid density. 相似文献
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为解决三臂液压凿岩台车油箱改造问题,使液压油箱在改造后能够满足设备使用要求,并保证液压油箱容量及系统散热性能,需计算油箱容量是否满足使用需求,验证液压系统热平衡是否合理。对于液压油箱容量方面,分别从液压油泵排量,油缸及油管的储油量,使用过程中油箱液面的变化量3个方面计算分析了液压油箱的容量问题,验证了改造后液压油箱容量满足使用要求;对于系统热平衡方面,分别计算了液压系统的动力机构发热功率、液压油箱散热功率及水冷散热功率,结合理论计算得到了解决散热问题的方法。液压凿岩台车改造后经过工厂及工业性试验,并通过实践检验了其理论计算的合理性,以期为其他设备的升级改造提供一定的借鉴。 相似文献
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贮油简组件为较常见的双简式外简,分别由吊环底座组件、贮油筒及支承块焊接组成,其中吊环底座组件为凸焊组合,支承块与贮油筒为凸焊组合,然后吊环底座组件与贮油筒缝焊组合形成贮油筒组件,各零件在焊接后分别有尺寸、强度要求,并保证缝焊后满足气密要求。通过对焊接参数进行合理调整,注重了焊接工装的改进设计及焊接材料的合理选择,保证了摩托车后减震器贮油筒组件的焊接质量。 相似文献